| Name | Eupatorium rugosum f. villicaule (Fernald) Fernald |
| Authorship | (Fernald) Fernald |
| Rank | Forma |
| Placed in | Eupatorium rugosum Houttuyn |
| GUID | urn:lsid:ipni.org:names:100878-2 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Eupatorium rugosum f. villicaule (Fernald) Fernald |
| Identification made in | [no date] (2) |